Airtac SCJ32 Standard Cylinder SCJ32X80-30STC
The AirTAC Airtac SCJ32 Standard Cylinder SCJ32X80-30STC is a genuine double-acting SINGLE-ROD air cylinder with a rear-cap ADJUSTING SCREW: the stroke end is field-adjustable within a 30 mm range without swapping the cylinder. Ø32mm bore, 80mm nominal stroke, PT1/8 ports and adjustable end cushioning.
- BoreØ32 mm
- Nominal stroke80 mm
- Stroke adjust-30 mm
- Port sizePT1/8
- Rod threadM10×1.25
- CushionAdjustable, 21 mm
About the Airtac SCJ32 Standard Cylinder SCJ32X80-30STC
The SCJ32X80-30STC puts fine stroke control into a compact 32 mm bore package. Its rear adjusting screw gives you up to 30 mm of field-adjustable stroke-end reduction, letting commissioning engineers dial in the exact end position without swapping cylinders or adding hard stops. The 12 mm piston rod and M10x1.25 rod thread handle push forces of 402 N at 0.5 MPa, rising to 724 N at the 0.9 MPa maximum operating pressure.
This model ships with a built-in magnet (-S) so CMSG/DMSG/EMSG solid-state or reed sensors clamp directly onto the tie-rod barrel for non-contact position sensing. The TC centre trunnion mount (supplied with the TCM1 bracket, order code F-SC32TC) allows the cylinder to pivot, making it ideal for swinging or articulating machine elements. The 21 mm air cushion at each end decelerates the piston quietly, and the PT1/8 port threads keep the footprint small.
Airtac SCJ32 Standard Cylinder SCJ32X80-30STC Technical Specifications
| Model | Airtac SCJ32 Standard Cylinder SCJ32X80-30STC |
|---|---|
| Series | SCJ adjustable-stroke tie-rod cylinder |
| Bore size | Ø32 mm |
| Nominal stroke | 80 mm |
| Stroke adjustment | Up to 30 mm (rear adjusting screw) |
| Acting type | Double acting (single rod) |
| Port size | PT1/8 |
| Rod thread | M10×1.25 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 800 mm/s |
| Cushion | Adjustable, 21 mm |
| Max stroke | Up to 1000 mm |
Specifications follow the official AirTAC SCJ (adjustable-stroke) datasheet. The rear adjusting screw sets the stroke end position; force is the same as the equivalent single-rod SC bore. Confirm against the product label before installation. Thread options: PT (standard) / G.
Theoretical Output Force (Ø32mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 402 N | 346 N |
| 0.7 MPa | 563 N | — |
| Max (@1.0 MPa) | 82 kgf | |
SCJ is single-rod, so force matches the equivalent SC bore: push uses the full bore area, pull subtracts the rod area. Actual usable force is lower than theoretical due to friction and back-pressure; size with a safety margin.
Model Code: Airtac SCJ32 Standard Cylinder SCJ32X80-30STC
| SCJ | Adjustable-stroke tie-rod cylinder series. |
|---|---|
| 32 | Bore size in mm. |
| ×80 | Nominal (maximum) stroke length in mm. |
| -30 | Adjustable-stroke range in mm (options 10/20/30/40/50/75/100). |
| -S | Optional built-in magnet for sensor position sensing. |
Related types: SC (single rod, fixed stroke), SCD (double rod), SCT (multi-position). SCJ mounting: Basic, FA, LB, TC, TCM1. Seals: TPU standard / H = Viton / N = NBR. Thread: blank = PT, G = G thread.
Where the Airtac SCJ32 Standard Cylinder SCJ32X80-30STC Is Used
Commissioning & Setup
Fine-tune the stroke end position during machine bring-up without draining the air system or removing the cylinder. The 30 mm screw range absorbs mechanical tolerance stack-ups.
Small-Part Diverter Gates
Adjust the gate opening angle on a packaging line by turning the rear screw. The centre trunnion mount lets the body pivot as the gate swings, reducing rod side-load.
Sensor Flag Alignment
Use the adjustable stroke to perfectly align a sensor flag or actuator dog with a reed switch after mechanical wear, restoring timing accuracy without replacing parts.
Is the Airtac SCJ32 Standard Cylinder SCJ32X80-30STC the Right Cylinder?
Choose the SCJ32 when your application needs a light, responsive actuator with stroke-end tunability. If you need more push force, step up to the SCJ40, which delivers 628 N at 0.5 MPa from its 16 mm rod. For fixed-stroke applications where the adjust screw is unnecessary, the standard SC32 is a simpler, slightly shorter alternative. When replacing an existing unit, match the 32 mm bore, 80 mm nominal stroke, 30 mm adjust range, PT thread, and the TC trunnion mounting configuration exactly to preserve the pivot point and sensor positions.
Adjustable-stroke checklist
- ✓ Need to fine-tune stroke on the line?
- ✓ Nominal stroke + adjust range (-30)
- ✓ Required force at your working pressure
- ✓ Port/thread type (PT/NPT/G)
- ✓ Magnet (-S) for sensors?
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 1.0 MPa operating pressure.
- check Set the rear adjusting screw, then lock it before running.
- check Adjust end cushion screws for smooth stops.
- check Use SCJ mounting accessory (FA / LB / TC / TCM1).
- check Installation by qualified personnel per AirTAC docs.
Airtac SCJ32 Standard Cylinder SCJ32X80-30STC FAQ
At 0.5 MPa the push force is 402 N and the pull force is 345 N (the difference is due to the single 12 mm rod area). At the maximum operating pressure of 0.9 MPa, push force reaches 724 N.
No. The SCJ32 is a double-acting cylinder and will drift or drop if pressure is lost or the valve is centred. The adjustable screw only sets the stroke end position; it is not a mechanical lock. For load holding without live air, add an external rod brake or a pilot-operated check valve.
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